We're dividing 866842 by 66 
We want to divide 866842 by 66.

Going ahead to step 1:
The number 66 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 66

Advancing to step 2:
66 can be fit into 86 1 times, resulting in a remainder of 20.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 66 from 86 to get 20.
Take the next digit (6) from the dividend and append it to 20, then repeat: 206 / 66

Advancing to step 3:
If we divide 206 by 66, we get 3 and a remainder of 8.
Use 3 as the next digit of our solution. 
Result so far: 13.0
The remainder is 8 after subtracting 198 from 206.
Append the next digit (8) from the dividend to 8 and continue with: 88 / 66

Advancing to step 4:
66 can be fit into 88 1 times, resulting in a remainder of 22.
The next digit of our result is 1. 
Result so far: 131.0
If we take 66 away from 88, we end up with 22.
Append the next digit (4) from the dividend to 22 and continue with: 224 / 66

On to step 5:
When dividing 224 by 66, we get 3 with a remainder of 26.
Write down 3 as next digit of the result. 
Result so far: 1313.0
If we take 198 away from 224, we end up with 26.
Fetch the next digit (2) from the dividend, attach it to 26 and continue: 262 / 66

Step 6:
When dividing 262 by 66, we get 3 with a remainder of 64.
Put 3 as the next digit of the answer. 
Result so far: 13133.0
Subtracting 198 from 262 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 7:
640 divided by 66 is 9 with a remainder of 46.
The next digit of our result is 9. 
Result so far: 13133.9
If we take 594 away from 640, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 8:
If we divide 460 by 66, we get 6 and a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 13133.96
Subtract 396 from 460 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 9:
66 can be fit into 640 9 times, resulting in a remainder of 46.
Record the quotient 9 as the next digit in the result. 
Result so far: 13133.969
Deduct 594 from 640 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 10:
66 can be fit into 460 6 times, resulting in a remainder of 64.
Record the quotient 6 as the next digit in the result. 
Result so far: 13133.9696
The remainder is 64 after subtracting 396 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 11:
If we divide 640 by 66, we get 9 and a remainder of 46.
The next digit of our result is 9. 
Result so far: 13133.96969
The remainder is 46 after subtracting 594 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 12:
460 divided by 66 is 6 with a remainder of 64.
The next digit of our result is 6. 
Result so far: 13133.969696
The remainder is 64 after subtracting 396 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 13:
66 goes into 640 9 times with a remainder of 46.
Record the quotient 9 as the next digit in the result. 
Result so far: 13133.9696969
Deduct 594 from 640 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 14:
66 goes into 460 6 times with a remainder of 64.
Record the quotient 6 as the next digit in the result. 
Result so far: 13133.96969696
If we subtract 396 from 460, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final outcome is 13133.96969696, with a leftover of 6.4e-08.